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test: pci: Test PCI address conversion functions

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Add tests for the functions dm_pci_bus_to_phys() and
dm_pci_phys_to_bus() which convert between PCI bus addresses and
physical addresses based on the ranges declared for the PCI controller.

The ranges of bus#1 are used for the tests, adding a translation to one
of the ranges to cover more cases.

Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andrew Scull 2022-04-21 16:11:09 +00:00 committed by Tom Rini
parent 398dc367c5
commit 55e6adbd78
2 changed files with 103 additions and 1 deletions
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2
arch/sandbox/dts/test.dts
View File

@ -997,7 +997,7 @@
#address-cells = <3>;
#size-cells = <2>;
ranges = <0x02000000 0 0x30000000 0x30000000 0 0x2000 // MEM0
0x02000000 0 0x31000000 0x31000000 0 0x2000 // MEM1
0x02000000 0 0x31000000 0x3e000000 0 0x2000 // MEM1
0x01000000 0 0x40000000 0x40000000 0 0x2000>;
sandbox,dev-info = <0x08 0x00 0x1234 0x5678
0x0c 0x00 0x1234 0x5678

102
test/dm/pci.c
View File

@ -376,3 +376,105 @@ static int dm_test_pci_region_multi(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_pci_region_multi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/*
* Test the translation of PCI bus addresses to physical addresses using the
* ranges from bus#1.
*/
static int dm_test_pci_bus_to_phys(struct unit_test_state *uts)
{
struct udevice *dev;
phys_addr_t phys_addr;
ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &dev));
/* Before any of the ranges. */
phys_addr = dm_pci_bus_to_phys(dev, 0x20000000, 0x400, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
/* Identity range: whole, start, mid, end */
phys_addr = dm_pci_bus_to_phys(dev, 0x2ffff000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x30000000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0x30000000, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x30000000, 0x1000, PCI_REGION_MEM);
ut_asserteq(0x30000000, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x30000abc, 0x12, PCI_REGION_MEM);
ut_asserteq(0x30000abc, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x30000800, 0x1800, PCI_REGION_MEM);
ut_asserteq(0x30000800, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x30008000, 0x1801, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
/* Translated range: whole, start, mid, end */
phys_addr = dm_pci_bus_to_phys(dev, 0x30fff000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x31000000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0x3e000000, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x31000000, 0x1000, PCI_REGION_MEM);
ut_asserteq(0x3e000000, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x31000abc, 0x12, PCI_REGION_MEM);
ut_asserteq(0x3e000abc, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x31000800, 0x1800, PCI_REGION_MEM);
ut_asserteq(0x3e000800, phys_addr);
phys_addr = dm_pci_bus_to_phys(dev, 0x31008000, 0x1801, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
/* Beyond all of the ranges. */
phys_addr = dm_pci_bus_to_phys(dev, 0x32000000, 0x400, PCI_REGION_MEM);
ut_asserteq(0, phys_addr);
return 0;
}
DM_TEST(dm_test_pci_bus_to_phys, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/*
* Test the translation of physical addresses to PCI bus addresses using the
* ranges from bus#1.
*/
static int dm_test_pci_phys_to_bus(struct unit_test_state *uts)
{
struct udevice *dev;
pci_addr_t pci_addr;
ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &dev));
/* Before any of the ranges. */
pci_addr = dm_pci_phys_to_bus(dev, 0x20000000, 0x400, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
/* Identity range: partial overlap, whole, start, mid, end */
pci_addr = dm_pci_phys_to_bus(dev, 0x2ffff000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x30000000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0x30000000, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x30000000, 0x1000, PCI_REGION_MEM);
ut_asserteq(0x30000000, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x30000abc, 0x12, PCI_REGION_MEM);
ut_asserteq(0x30000abc, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x30000800, 0x1800, PCI_REGION_MEM);
ut_asserteq(0x30000800, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x30008000, 0x1801, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
/* Translated range: partial overlap, whole, start, mid, end */
pci_addr = dm_pci_phys_to_bus(dev, 0x3dfff000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x3e000000, 0x2000, PCI_REGION_MEM);
ut_asserteq(0x31000000, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x3e000000, 0x1000, PCI_REGION_MEM);
ut_asserteq(0x31000000, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x3e000abc, 0x12, PCI_REGION_MEM);
ut_asserteq(0x31000abc, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x3e000800, 0x1800, PCI_REGION_MEM);
ut_asserteq(0x31000800, pci_addr);
pci_addr = dm_pci_phys_to_bus(dev, 0x3e008000, 0x1801, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
/* Beyond all of the ranges. */
pci_addr = dm_pci_phys_to_bus(dev, 0x3f000000, 0x400, PCI_REGION_MEM);
ut_asserteq(0, pci_addr);
return 0;
}
DM_TEST(dm_test_pci_phys_to_bus, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);